The steps of the Oval Basin in Cardiff Bay are being fenced off to discourage people from gathering in groups at a time when Covid-19 restrictions are still in place.
The fences, which will be in place ahead of the weekend, are being put in place by Cardiff Council following discussions with South Wales Police.
Cabinet Member for Culture and Leisure, Cllr Peter Bradbury, said: “The improving weather over the last couple of weekends has seen increasing numbers of people congregating in Cardiff Bay.
“The vast majority of people are continuing to obey the rules, but it’s really important that we all play our part. The last thing any of us want is for all the good work to reduce the number of positive cases in Cardiff to be undone when we have come so far.”
Similar fencing was erected last summer following a series of large gatherings on the steps which required police intervention to disperse, and the deployment of additional council staff to carry out a massive clean-up operation which cost taxpayers thousands of pounds.